INSTRUMENT WHISPERER

Instrument Measuring: Why Precise Descriptions Are Necessary When Completing Count Sheets

BY RICK SCHULTZ

sing descriptions such as “small,” “medium,” “large,” “heavy,” “long,” etc. is not an acceptable unit of measure Uwhen noting the size of an instrument on an instrument count sheet. The science of surgery requires the precise selection of specific instruments for each individual, surgical tray and procedure. A “medium” scissor, in the eye of one technician or surgeon, may mean a completely different size scissor to another. Just as a baking recipe should be carefully written and followed, the same can be said of every instrument count sheet. A recipe would never call for a handful of flour or a medium cup of Figure 1 Figure 2 sugar, just as an instrument count sheet should never simply describe a retractor as “large.” Each instrument description assembling the trays should be taught A. Jaw angle; should include the instrument’s full how to measure these scissors (See B. Shaft length; name, as well as the length or size, Figure 1). The sharpness test standard for C. Bite size; and measured in centimeteres/millimeters or vascular scissors is yellow scissor testing D. Bite opening inches. material. It is important to use the following Kerrison rongeurs are usually only The sharpness test standard for measurement tips as a guide for verifying referred to by their bite size, 1 mm thru Kerrison rongeurs is to cut cleanly the size of certain instruments. 6 mm (See Figures 2 and 3). This bite through one thickness of an index card Vascular scissors are designed in size reference is only 25% of the specific or 100# card stock, without tearing. various lengths, and with precise cutting measurements for this instrument. The Neurological/spinal surgery is very angles. Count sheets should reflect the four specific measurements of a Kerrison precise in regard to surgical instrument exact length and angle of the cutting rongeur are: sizes. Cushing-style rongeurs (See Figure blades. Using a protractor, the technician 4) have four distinct points of measure:

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Figure 3 Figure 4 Figure 5

A. Shaft length; B. Jaw angle; C. Jaw width; and D. Jaw length

Like Kerrison rongeurs, the Cushing rongeur’s measurements are key. Kelly and Richardson retractors have different blade sizes. Kelly retractors (See Figure 5) are usually referred to as large retractors. Richardson retractors are smaller than Kelly retractors. The three key measurements for a retractor are:

A. Length; B. Depth; and C. Width

Balfour retractors (See Figure 6) have Figure 6 Figure 7 similar measurements to Kelly retractors, with the exception of the spread of side Balfour retractors also have side large and small or wide and narrow. blades. The three key measurements are: blades and center blades, and both The wider speculums are the Graves measurements are important. These design (A) and speculums that tend to be A. Width; retractors have various snap-on side narrow are the Pederson design (B). See B. Depth; and blades of different depths; many times, Figure 7. C. Spread of side blades count sheets call for various side blades. Debakey forceps (See Figure 8) and Speculums are usually referred to as Cooley forceps are often referred to as

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Why does our Q surgery department complain about the sharpness of micro- vascular scissors?

These scissors have small A cutting surfaces and need to be sharpened more often than standard scissors. A good frequency for sharpening would be six to eight times per year. Note: Some micro-vascular scissors have an overall length of 6”, 7” and 8”, but the cutting blades are small; therefore, red scissor test material would not be used. Due to Figure 8 Figure 9 the size of the cutting surface, yellow scissor test material should be used as the sharpness test standard. small, medium and fat instead of the actual measurement in millimeters (mm). Those sizes reference the jaw width, just proximal from the tip (A). Common jaw widths are 1.5 mm, 2.0 mm 2.5 mm and 3.0 mm. Hemostats are always measured from the bottom of the rings to the distal tip (A). See Figure 9 for an image of a Rochester-Pean hemostatic forcep. If the hemostat is curved or angled, the measurement is still from rings to tip.

RICK SCHULTZ, the Instrument Whisperer™, is an author, inventor and lecturer, and the retired Chief Executive Officer of Spectrum Surgical Instruments Corp. He served as contributing editor of IAHCSMM’s Central Service Technical Manual (Fifth, Sixth, Seventh, Eighth Editions). Rick authored the textbooks Inspecting Surgical Instruments: An Illustrated Guide and The World of Surgical Instruments: The Definitive Inspection Textbook, which was released in June 2018. Schultz was named IAHCSMM’s Educator of the Year in 2002, and in 2006, was named American Hospital Association Educator of the Year. In 2007, he was named by Healthcare Purchasing News as one of the 30 Most Influential People in Healthcare Sterile Processing. Schultz currently provides educational lectures to Central Service professionals at IAHCSMM’s annual conferences and conducts operating room personnel lectures across the country.

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